1. Algebra 2

The temperature of a liquid during an experiment can be modeled by the function f(x)=3.8cos(πx20)+2.2 , where f(x) is the temperature in °C and x is the number of minutes into the experiment. What is the lowest temperature the liquid reached during the

2. Algebra

Solve the following equations. Show all your work. (2 points) x/x-2 +x-1/x+1 = -1 PLZ help :D

3. Math

0.85 round to yeh nearest gram

4. Math

A scale drawing showing the distance from your house to the school has a scale of 1.5 cm to 5 km. If the actual distance from your house to the school is 30 km, what is the distance on the drawing?

5. Angles of elevation and depression

The teet of two vertical poles of height 3m and 7m are in line with a point P on the ground. The smaller pole being between the taller pole and P and at distance of 20m from P the angle of elevation of the top T of the taller pole from the top R of the

6. Algebra

Help Please, ty A ball is launched at 20 meters per second (m/s) from a 60 meter tall platform. The equation for the object's height s at time t seconds after launch is s(t) = –4.9t2 + 20t + 60, where s is in meters.  What is the height above the

7. chemistry

how to calculate the oxidation state for 'cr' in K2CRO4 ?

8. Physics 11

You are creating waves in a rope by shaking your hand back & forth. W/out changing the distance your hand moves, you begin to shake it faster & faster. What happens to each of the following aspects of the wave? Amplitude remains the same as the distance

9. science

if the speed of shatabdi express is 150 miles per hour,then express its speed in SIunit

11. Physics 11

An FM radio station transmits radio signals that have a wavelength of 3.2m. Where would you have to adjust your tuner in order to pick up its music? Note: FM waves are measured in MHZ I have no idea where to go with this... Thank you :)

12. Algebra

A wrestling match has eliminations each round. The table below shows the number of wrestlers in each of the first 4 rounds of the tournament: Round (x) 1 2 3 4 Wrestlers f(x) 64 32 18 9 Compute the average rate of change of f(x) from x = 1 to x = 4 and

13. Geography

In southwest asia most people live?

14. Chemistry

Number of Oxygen atoms in 4.4g of CO2 is A)1.2×10^13 B)6×10^22 C)6×10^23 D)12×10^23 Please tell me correct option with the solution.

15. Maths

The product of two numbers is 49 What is the greatest possible sum of the two numbers?

16. math

Solumedrol 1.5 mg/kg is ordered for a child weighing 50 lb. Solumedrol is available as 75 mg / 1 mL is available. How many mL must the nurse administer?

17. government

Why did the framers of the Constitution fear 'excessive democracy'? In what ways were the framers able to limit its influence on the structure of government?

18. Math algebra

The length of a piece of fabric is 8y yards.Landon cuts 7 yards from it to make some cushion covers.He then uses 4 equal pieces.How long is each piece?

19. Algebra 2

how would i graph g(x)=4cosx

20. math

The height of an object varies directly with the length of its shadow. A person who is 6 feet tall casts a 15-foot shadow. How long is the shadow of a 20-foot tree? answer

21. Medical Billing and Coding

The patient is seen by his family physician for follow-up treatment of recently diagnosed asthmatic bronchitis. The physician's fee is \$75. The patient's copayment is \$20, and the patient is not required to pay any additional amount to the provider. The

Determine which ordered pair is a solution of y = 2x - 3 A. (-2, 7) B. (0, 3) C. (-4, -11) D. (5, -7)*** Please help!

23. Physics

A man of mass70Kg climbs a ladder which is 4m long leaning against a wall which is 3m high.Calculate the work done by this man

24. Chem

The objective lens of a compound microscope has a numerical aperture of 0.4. The maximum useful magnification of the microscope is: 400x 1,000x 10x There is not enough information given to calculate this the correct answer is not given

The population of a small town is decreasing at a rate of 6% per year. If the town's population is 12,500 in 2017, what will the population be in 6 years? 8,623 people 8,000 people

26. washington state his

please help. Which of the following best identifies how Washington’s economy changed overall after World War II? A.It scaled back agricultural production. B.It shut down most manufacturing operations. C.Its activities became more diverse. D.Its

27. Washington state history

please help. Which industries remain as important to Washington’s economy today as in the 1800s? Select all that apply. A.biotech B.entertainment C.forestry D.mining E.software development F.tourism

28. maths

from the top of a vertical cliff. 65 metres high a lifeguard can see a boat out at sea the boat is 42 metres from the base of the cliff. What is the angle of depression of the boat from the top of the cliff?

29. Mathmatics

A sector of a circle of radius 9 cm subtends angle 120 at center of the circle find the area of the sector to the nearest cm

30. Math

Marcos is 7 years older than his sister, Rosa. The sum of their ages is 1 less than 3 times Rosa's age. How old is each?

31. Washington state history

How did OPEC’s oil embargo directly affect Washington? A.It caused fuel shortages B.It caused many oil workers to find other jobs. C.It led to a steep drop in gas prices. D.It led to the closing of local drilling operations.

32. Physics

Four 6.5-kg spheres are located at the corners of a square of side 0.70 m . Calculate the magnitude of the gravitational force exerted on one sphere by the other three. Calculate the direction of the gravitational force exerted on one sphere by the other

33. Physics

The relative density of an alloy is 6.5.a.find the mass of a solid cube of side 20cm.b.what volume of the alloy has a mass of 13kg

34. ALGEBRA

In how many ways can a five questions,true or false test be answered if each question must be answered true or false

35. Algebra

Which of the following options results in a graph that shows exponential growth? f(x) = 0.4(3)x f(x) = 3(0.5)x f(x) = 0.8(0.9)x f(x) = 0.9(5)−x

36. Geometry

A pilot is flying at a speed of 300 miles per hour and the wind is blowing due north at 50 miles per hour.What is the magnitude of the resultant velocity of the plane?

37. math

Graph the following set on a number line : {x|≤----1

38. Algebra

(i am new to this subject of algebra) Use the figure to answer the following questions: ( a triangle with the bottom right corner of it labeled L with (1, 1) x y coordinates. Left corner of the triangle is labeled M at the (-3, 1) coordinates. the top of

39. College Algebra

A 15 1/2 foot board is cut into pieces 3 1/4 long for a bookcase. What is the length of the piece remaining after as many shelves as possible have been cut?

40. Maths

On a biased coin the probability of it showing heads for a given coin toss is 0.52. In a sequence of tosses, what is the probability of getting the first tail on flip 5? I can just do a tree diagram for this and figure it out the slow way, but if I get

41. algebra

What type of sampling is this: Group the students in a local college by year and then randomly select 15 students from each group.

42. Math pls

Find the slope of the line through (6, 2) and (4, -2) 1. 0 2. 1/2 3. undefined 4. 2

43. Chemistry

Write out the ionic and net ionic equations of Ca(OH)2 + HNO3 ---> Ca(NO3)2 + H2O

44. Math

A certain type of bacteria is growing at an exponential rate that can be modeled by the equation y=ae^kt, where t represents the number of hours. There are 300 bacteria initially, and 1500 bacteria 5 hours later. How many bacteria will be present at time

45. math

Leila ran three times last week. Here are the distances she ran (in kilometers). 16.1 ,5,8.92 What is the total distance Leila ran on these three days?

46. Algebra

Which of the following options is an equivalent function to f(x) = 2(5)^2x? f(x) = 50x f(x) = 100x f(x) = 2(25)x f(x) = 4(25)x

47. Math

Free time Mr. Colborne throws a ball paper in the garbage can the probability the ball goes in the can is 3/4 what is the probability he misses two times in a row?

48. Washington state history

What common experience did many women and African Americans have after World War II? A.They lost their jobs in industry due to competition from demobilized soldiers. B.They secured equal pay laws despite the return of demobilized soldiers to the workforce.

49. English

1. He was surprised she came at all. 2. He was surprised she came after all. 3. He was surprised she came anyway. 4. He was surprised she came any how. 5. He was surprised she came at any rate. 6. He was surprised she came at all events.

50. Maths

The product of two numbers is 49 What is the greatest possible sum of the two numbers?

51. math

on one side of my street the homes all have odd numbers ending with the musa which is number 16 On the other side the number are all even ending with nwosu which is number 17 Femi olu is my next door neighbor and his house is number 9 you pass my house

52. Math

Consider the system of equations y= -x^2+9 y=3/x Find the solution of the system to four demimal places

53. Math

LCD 1.1/2 4/x^2

54. English

The dog has almost gone blind. He said, 'It's strange. These days you look blurry.' (You refers to the dog's master.) ------------------------------ What does 'it' refer to in 'It's strange'? Does it refer to 'situation'?

55. Maths

Find the largest no that divides 630 and 940 leaving reminders 6 and 4 respectively

56. Science

What is the formula of calculating linear expansion

57. maths

find the coordinates of the points where l cuts the axes. line equation l is 5+y-2x=0

58. maths

a car moves 300m due north and then 60mdue south .what is the distance covered by the car and what is its dislacement

Write the equation of the line that passes through the points (-4,-2) and (-3,5) y= -3/7x+16 y= 1/7x+16

60. College Algebra

A nut moves 5/64 inches for each turn Find the number of turns is will take for the nut to move 1 7/8 inches.

61. Math

If the following function was transformed to g(x-2)+3, find g(2)

62. ALGEBRA

when the sun is 57 degree up from the horizon,a tree cast a shadow 14 yard long.how tall is the tree?

63. Math

Express the ratio in its simplest form. 8 furlongs:3 miles, 32 ounces:5pounds, 14 pounds:2 stones, 1760 yards :2 miles. Please tell me how I convert the quantities in same units.

64. physics

A climber is climbing a mountain. He is hanging from the bottom of a pair of anchors forming a Y shape at an angle θ. What is the force F at each anchor, express symbolically ( in terms of L, the climber, and θ)

65. Math

What is the product of -7 and -12 (A) -84 (B) 84 (C) -74 (D) 74 thxxxxxxxxxxxx :)

66. math

s,e,l,e,c,t,e,d are in the bag allen picked a letter.What is the fraction,decimal,and percentage of not selecting a consonant

67. ctpd

calculate thetotal perimeter of the sector

68. Physics

Let vector A = (6.0 m, 300 south of east), vector B = (13.9 m, north), vector C = (5.0 m, 450 south of west).  Find the magnitude of vector D = A+B+C?

69. Maathhh

30 students surveyed, 30% said their favorite juice was grape. How do I find out how many students that is?

70. Maths - Matrices

Given: |4 -2| X = 2|-4 -4| |-1 1| | 2 2| What is X? I solved this and couldn't get an answer - that is, the result was undefined/null, as it didn't like how the multiplication worked. I got this for every way I tried doing it, including by transposing the

71. Math

Plss help (3b-4a)(3b-4a)

72. Pre-Calculus 12

how to graph y= (x^2-3x-10)/(x-2)

73. History

Is it true that the colonization in Poland began with Russian-Polish war for 110 years?

75. Math

the lenth of a poal is 11\2 meter. 1\3rd of the poal is painted red, 1\4th is painted in green and the remaining portion in blue. find thd lenth of the portion painted in blue?